package com.hua.springCloud.controller;

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.hua.springCloud.entities.CommonResult;
import com.hua.springCloud.entities.Payment;
import com.hua.springCloud.service.PaymentService;
import com.hua.springCloud.service.PaymentServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

@RestController
public class Controller {
    public static final String SERVICE_URL = "http://nacos-provider-payment";

    @Resource
    private RestTemplate restTemplate;


    @RequestMapping("/consumer/fallback/{id}")
    @SentinelResource(value = "fallback", fallback = "handlerFallback", blockHandler = "blockHandler"
            , exceptionsToIgnore = {IllegalArgumentException.class})
    public CommonResult fallback(@PathVariable Long id) {
        CommonResult result = restTemplate.getForObject(SERVICE_URL + "/paymentSQL/" + id, CommonResult.class, id);
        if (id == 4) {
            throw new IllegalArgumentException("非法参数异常....");
        } else if (result.getData() == null) {
            throw new NullPointerException("NullPointerException,该ID没有对应记录");
        }
        return result;
    }

    public CommonResult handlerFallback(@PathVariable Long id, Throwable e) {
        Payment payment = new Payment(id, "null");
        return new CommonResult(444, "fallback,无此流水,exception  " + e.getMessage(), payment);
    }

    public CommonResult blockHandler(@PathVariable Long id, BlockException blockException) {
        Payment payment = new Payment(id, "null");
        return new CommonResult(445, "blockHandler-sentinel限流,无此流水: blockException  " + blockException.getMessage(), payment);
    }


    @Autowired
    private PaymentService paymentService;

    @GetMapping(value = "/consumer/paymentSQL/{id}")
    public CommonResult paymentSQL(@PathVariable("id") Long id)
    {
        if(id == 4)
        {
            throw new RuntimeException("没有该id");
        }
        return paymentService.paymentSQL(id);
    }

}
